Multi-bluff body air-coal separating pulverized coal combustion device

A technology of separation of concentration and pulverized coal combustion, applied in the direction of burner, combustion method, combustion type, etc., can solve the problems of long service life, unable to meet the production and operation requirements of power plants, etc., to reduce reaction opportunities, strengthen ignition and stable combustion performance , high burnout effect

Inactive Publication Date: 2015-07-15
HARBIN BOSHEN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for domestic power plant boilers whose combustion coal quality cannot reach the design value, and power plant boilers that burn a large amount of low-quality bituminous coal, lean coal, or anthracite, the existing level of thick-lean combustion techno

Method used

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  • Multi-bluff body air-coal separating pulverized coal combustion device
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  • Multi-bluff body air-coal separating pulverized coal combustion device

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Embodiment Construction

[0006]The present invention is composed of a burner inlet elbow 1, a fixed separation block 2, a burner inlet radius section 3, a pulverized coal concentrator 4, an adjustable block 5, an equalizer plate 6, a burner nozzle 7, a blunt body 8, Outer nozzle bias secondary air nozzle 9, flange 10, rotating shaft 11, burner inlet elbow lower cylinder 12, burner inlet elbow upper cylinder 13, constitute, characterized in that: the burner inlet The burner inlet elbow lower cylinder 12 and the burner inlet elbow upper cylinder 13 in the elbow 1 are provided with the fixed separation block I2-1, and the burner inlet elbow lower cylinder 12 The space between the cylinder body 13 and the inlet elbow of the burner is provided with a fixed separation block II2-2, and the front of the pulverized coal concentrator 4 is provided with a fixed separation block III2-3. The slopes α1, α2, and α3 of the fixed separation block I2-1, fixed separation block II2-2, and fixed separation block III2-3 ar...

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Abstract

The invention relates to a pulverized coal combustor, in particularly to a multi-bluff body air-coal separating pulverized coal combustion device which is used for a four-corner tangentially-fired pulverized coal boiler. The multi-bluff body air-coal separating pulverized coal combustion device is characterized in that fixed separating baffle blocks I are arranged on a combustor inlet elbow lower cylinder and a combustor inlet elbow upper cylinder in a combustor inlet elbow, a fixed separating baffle block II is arranged in a space between the combustor inlet elbow lower cylinder and the combustor inlet elbow upper cylinder, and a fixed separating baffle block III is arranged in front of a pulverized coal concentrator; a combustor nozzle is provided with two to four layers of bluff bodies. According to the multi-bluff body air-coal separating pulverized coal combustion device disclosed by the invention, the effect of reducing the oxynitride emission concentration is increased by about 40% on the premise of the effect of reducing the oxynitride emission concentration of an original air-coal separating pulverized coal combustor, and the oxynitride emission concentration is reduced from below 300mg/Nm<3> (6% of O2) of the original air-coal separating pulverized coal combustor into below 200mg/Nm<3> (6% of O2) of the multi-bluff body air-coal separating pulverized coal combustion device.

Description

Technical field [0001] The present invention involves a kind of coal burner, which is specifically a multi -blunt body that is used to burn coal boiler with a multi -blunt body. Background technique [0002] The thickness of the coal powder is widely used in the coal flood boilers of the power plant. The form of the thickness of the coal also has various forms, but basically the level of the level is separated.However, for the current domestic power station boiler burning coal quality cannot reach the design value, and a large amount of inferiority of inferior tobacco coal, poverty coal, or smoke -free coal power station boiler, the existing level of burning technology does not as much as possible to reach the low and low NO. X , Anti -slag and high temperature corrosion, long service life and other indicators cannot meet the production operation requirements of power plants, so it is imminent to solve the above problems. Invention content [0003] The purpose of the present inv...

Claims

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Application Information

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IPC IPC(8): F23D1/00
CPCF23D1/00F23D2201/20
Inventor 牛博申张政强吴东海于淼
Owner HARBIN BOSHEN TECH DEV CO LTD
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